Obama steps up sanctions on Russia

President Obama has stepped up sanctions on Russia in the wake of the Ukrainian crisis, along with opening the door to more sweeping measures against core parts of the Russian economy including the oil and natural gas industries.
http://www.nytimes.com/2014/03/21/us/politics/us-expanding-sanctions-against-russia-over-ukraine.html?emc=edit_th_20140321&amp;nl=todaysheadlines&amp;nlid=68163943&amp;_r=0